The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A208063 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A208063

Number of n X n 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 0 1 1 vertically
(history; published version)

#7 by Charles R Greathouse IV at Fri Dec 18 18:18:02 EST 2015

NAME

Number of nXn n X n 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 0 1 1 vertically

Discussion

Fri Dec 18

18:18

OEIS Server: https://oeis.org/edit/global/2478

#6 by Russ Cox at Sat Mar 31 12:37:21 EDT 2012

AUTHOR

_R. H. Hardin (rhhardin(AT)att.net) _ Feb 23 2012

Discussion

Sat Mar 31

12:37

OEIS Server: https://oeis.org/edit/global/875

#5 by Ron Hardin at Thu Feb 23 05:25:55 EST 2012

STATUS

editing

approved

#4 by Ron Hardin at Thu Feb 23 05:25:50 EST 2012

LINKS

R. H. Hardin, <a href="/A208063/b208063.txt">Table of n, a(n) for n = 1..32</a>

#3 by Ron Hardin at Thu Feb 23 05:24:49 EST 2012

NAME

allocated for Ron HardinNumber of nXn 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 0 1 1 vertically

DATA

2, 16, 72, 576, 3696, 26244, 198000, 1638400, 12913840, 117722500, 1052059680, 10059287616, 97769309736, 1020075760144, 10507456855392, 116747852120064, 1295601058976256, 15148523442518244, 177995312325281880

OFFSET

1,1

COMMENTS

Diagonal of A208069

EXAMPLE

Some solutions for n=4

..1..0..1..1....1..0..0..1....1..1..0..1....1..0..0..1....1..1..0..1

..0..0..1..1....1..1..0..1....1..1..0..1....0..1..1..0....0..1..0..1

..0..0..1..1....1..0..0..1....1..1..0..1....1..0..0..1....1..0..0..1

..0..0..1..1....1..0..0..1....1..0..0..1....0..1..1..0....0..1..0..1

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Feb 23 2012

STATUS

approved

editing

#2 by Ron Hardin at Thu Feb 23 05:22:58 EST 2012

KEYWORD

allocating

allocated

#1 by Ron Hardin at Thu Feb 23 05:22:58 EST 2012

NAME

allocated for Ron Hardin

KEYWORD

allocating

STATUS

approved